| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear body capable of constituting a cogged wheel row using one sort of gears, to shorten the processing time for components and their time for assembling, and to suppress product costs. SOLUTION: On one shaft a large gear 2 is installed and a first pinion 3 located on one side in axial direction of the large gear 2 and a second pinion 4 located on the other side. A bearing hole 5 is formed in the shaft portion on the side with the first pinion 3 while a mounting shaft 6 is provided protrusively on the shaft portion on the side with the second pinion 4. The number of teeth and the module of the pinions 3 and 4 are made the same and the modules of the gear 2 and pinions 3 and 4 are made equal. The spacing A of the gear 2 and the second pinion 4 is set greater than the spacing B of the large gear 2 and the first pinion 3. The area between the gear 2 and the second pinion 4 is made a shaft having a smaller diameter than the second pinion 4.
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